From 1,200 to 1,500 mg of calcium is recommended every day during pregnancy. If you are lactose intolerant, you will need to look for other good sources of calcium, such as legumes (starchy beans), dark green vegetables, tofu and canned salmon or sardines.

Calcium supplements are also an option. Look for elemental calcium in the form of calcium citrate, lactate or gluconate, as these are best absorbed.

Avoid calcium supplements containing bone meal, dolomite, and oyster shells. They may be contaminated with harmful substances like lead and mercury.

Remember, if you take calcium supplements, you will need to eat extra portions of protein-rich foods.